A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects
Joint Authors
Hou, Feng
Liu, Enlong
Zhou, Cheng
Liao, Mengke
Luo, Huiwu
Liu, Xingyan
Li, Quan-ming
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-16
Country of Publication
Egypt
No. of Pages
12
Abstract EN
The triaxial creep tests of frozen silty clay mixed with sands were performed under different pressures, and the test results demonstrated that, under the low confining pressure, when the shear stress is lower than the long-term strength, the test specimen exhibits an attenuation creep because the strengthening effect is greater than the weakening effect.
When the shear stress is higher than the long-term strength, the test specimen exhibits a nonattenuation creep due to the level of the strengthening and weakening effects change in different stages.
As the confining pressure increases, the test specimens only exhibit an attenuation creep because of the enhancing strengthening effect.
Both the hardening parameter and the damage variable were introduced to describe the strengthening and weakening effects, respectively, and a new creep constitutive model for frozen soil considering these effects was put forward based on the theory of elastoviscoplastic and the fractional derivative.
Finally, the model parameters were analyzed and their determination method was also provided to reveal the trend of parameters according to the triaxial test results.
The calculated results of the constitutive model show that the proposed model can describe the whole creep process of frozen soil well.
American Psychological Association (APA)
Hou, Feng& Li, Quan-ming& Liu, Enlong& Zhou, Cheng& Liao, Mengke& Luo, Huiwu…[et al.]. 2016. A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1096227
Modern Language Association (MLA)
Hou, Feng…[et al.]. A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-12.
https://search.emarefa.net/detail/BIM-1096227
American Medical Association (AMA)
Hou, Feng& Li, Quan-ming& Liu, Enlong& Zhou, Cheng& Liao, Mengke& Luo, Huiwu…[et al.]. A Fractional Creep Constitutive Model for Frozen Soil in Consideration of the Strengthening and Weakening Effects. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1096227
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096227